(19)

(11)

EP 1 719 021 A1

(12)

(43) Date of publication: 08.11.2006 Bulletin 2006/45 (21) Application number: 05710818.5 (22) Date of filing: 12.01.2005

(51) International Patent Classification (IPC):  G03G 9/097(2006.01) (86) International application number: PCT/KR2005/000101 (87) International publication number: WO 2005/069083 (28.07.2005 Gazette 2005/30)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 13.01.2004 KR 2004002281 15.12.2004 KR 2004106176 (71) Applicant: LG CHEMICAL LTD. Seoul 150-010 (KR)	(72) Inventors: LEE, Hyeung-Jin Nam-gu, Busan-city 608-080 (KR) PARK, Joo-Yong Seo-gu, Daejeon-city 302-782 (KR) LEE, Chang-Soon Yuseong-gu, Daejeon-city 305-390 (KR) (74) Representative: Harrison Goddard Foote  Belgrave Hall Belgrave Street Leeds LS2 8DD Leeds LS2 8DD (GB)